Beyonce's surprise gig at country awards

Pop superstar Beyonce helped celebrate the 50th anniversary of the Country Music Awards with a secret and boisterous performance of her song Daddy Lessons with the Dixie Chicks.

Beyonce hit the stage unintroduced when the show was about two-thirds over on Wednesday, wearing multiple strands of pearls and a sheer, champagne-colored body-hugging dress.

She looked happy and comfortable, dancing and clapping along with the performers who filled the stage. The performance got a standing ovation.